S1D1 Epson Electronics America, Inc., S1D1 Datasheet - Page 403

• Manufacturer Part Number: S1D1
• Description: LCD Controller-driver With Built-in Character ROM
• Manufacturer: Epson Electronics America, Inc.

S1D15705 Series
(16) Power Control Set
This command sets the function of the power supply circuit. For details, see the Power Supply Circuit of “Function
Description”.
(V/F circuit: Voltage follower circuit, V adjusting circuit: voltage adjusting circuit)
(17) V
This command sets the V
“Function Description”.
(18) Electronic Control (2-Byte Command)
This command controls the liquid crystal drive voltage V
crystal power supply and can adjust the light and shade of liquid crystal display.
Since this command is a 2-byte command that is used together with the electronic control mode set command and
electronic control register set command, always use both the commands consecutively.
• Electronic Control Mode Set
Entering this command validates the electronic control register set command. Once the electronic control mode is set,
the commands other than the electronic control register set command cannot be used. This state is reset after data is set
in the register using the electronic control register set command.
10–44
A0 RD WR D7 D6 D5 D4 D3 D2 D1 D0
A0 RD WR D7 D6 D5 D4 D3 D2 D1 D0
A0 RD WR D7 D6 D5 D4 D3 D2 D1 D0
0
0
0
5
E R/W
E R/W
E R/W
1
1
1
Voltage Adjusting Built-in Resistance Ratio Set
0
0
0
0
0
1
0
0
0
5
voltage adjusting built-in resistance ratio. For details, see the Power Supply Circuit of
1
1
0
0
0
0
1
0
0
0
1
0
0
0
1
1
0
0
1
0
0
1
1
1
0
EPSON
5
0
1
0
1
0
0
1
1
output from the voltage adjusting circuit of the built-in liquid
Boosting circuit: OFF
Boosting circuit: ON
V adjusting circuit: OFF
V adjusting circuit: ON
V/F circuit: OFF
V/F circuit: ON
Selected state
Rb to Ra ratio
Large
Small
Rev. 3.1a